Add some context to the rule

Author: dorian-burihabwa-sonarsource

rules/S7480/java/metadata.json

@@ -1,6 +1,6 @@
 {
   "title": "The result of \"Downstream.push\" should not be ignored",
-  "type": "CODE_SMELL",
+  "type": "BUG",
   "status": "ready",
   "remediation": {
     "func": "Constant\/Issue",

rules/S7480/java/rule.adoc

@@ -4,6 +4,7 @@ The integrator function of stream gatherers can pass data downstream using the p
 The down stream should return a result indicating whether it accepted the latest value.
 
 Ignoring the value returned by `Downstream.push` might lead to inconsistent behavior of the integrator.
+Indeed, if `downstream.push` returns `false`, and no longer accepts elements, the decision to continue processing the incoming stream should be deliberate.
 
 == How to fix it
 Use or return the result of `Downstream.push`.
@@ -42,13 +43,23 @@ Gatherer.ofSequential(
   (state, element, downstream) -> {
       int newState = state.addAndGet(element);
       if (!downstream.push(newState)) {
-        // Do something to recover from rejected push
+        // Since the downstream is no longer accepting elements, we stop processing incoming streams
         return false;
       }
       return true;
   });
 ----
 
+[source,java,diff-id=1,diff-type=compliant]
+----
+Gatherer.ofSequential(
+  () -> new AtomicInteger(100),
+  (state, element, downstream) -> {
+      int newState = state.addAndGet(element);
+      return handleResult(downstream.push(newState));
+  });
+----
+
 //=== How does this work?
 
 //=== Pitfalls